@article{holt1990-2137962,
  author  = {Holt, I. J. and Harding, A. E. and Petty, R. K. and Morgan-Hughes, J. A.},
  title   = {{A new mitochondrial disease associated with mitochondrial DNA heteroplasmy}},
  journal = {American journal of human genetics},
  year    = {1990},
  pmid    = {2137962}
}